DATA COLLECTION IN CASE OF A ROAD ACCIDENT
A crash involves the participation of 3 factors
- Human
- Vehicle and a
- Specific environment (infrastructure).
- Pre Crash
- Crash and
- Post Crash.
- Detailed vehicle inspection
- Crash scene inspection and
- Witness/victim interviews for identification of evidence across all the three factors and phases, documented in the form of photographs, measurements and data forms.
Crash Scene inspection
Inspection involves identifying any traces left on the road as a result of the crash, understanding the available road geometry, road furniture, markings and signage, and finally, measuring and mapping the complete crash scene to create a to-scale scene diagram.
Vehicle inspection
Inspection covers mapping and measuring the external damages on the vehicle, inspection of interiors to document safety system availability / usage, measure the integrity of the passenger compartment and occupant contacts resulting in injuries.
Victim/Witness interviews
Interviews focus on questions targeted at extracting the pre-crash situations, sequence of events and any relevant information related to the crash. Witness/victim statements are subjective and data from such interviews are always validated against the evidences from vehicle and crash scene inspection.
The reconstruction of a crash gives a realistic model of the event by adopting a systematic approach. The data collected at accident site is used as input and used to develop a computer simulation of the event.
The steps that are followed for crash analysis and reconstruction are as follows:
- Investigation of the crash site
- Measurement of details on the crash site
- Collection of data
- Making Scaled drawings
- Modeling of vehicles, pedestrians and vehicle – occupants
- Computer simulation and optimization
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